Scientists and bee experts discuss the crucial role that honeybees, a "keystone species," play in our economy and ecosystems, as well as bees' fascinating social organization and what we can do to reverse the decline of nature's pollinators.

This pledge period special airs throughout December, 2014 and contains segments from 16 of Nature's films about birds.

Join Lisa Dabek and her team with Woodland Park Zoo’s Tree Kangaroo Conservation Program as they journey into the remote cloud forests of Papua New Guinea. Meet one of the most elusive creatures you will ever see in the wild – the Matschie’s tree kangaroo. See how the local people are helping to protect this rare marsupial and its forest home.

Biologist Jack Hogg has been studying a herd of wild bighorn sheep on Montana’s National Bison Range for more than 35 years. When Jack’s herd gets infected with a deadly form of pneumonia, he goes in search of answers.

In the frigid Indian Himalayas, people manage to eke out a living alongside one of Asia’s most elusive cats: the snow leopard. Today there may be as few as 4,000 of these great cats remaining in the wild, and with the snow leopards‘ prey in decline, encounters between herders and the cat are on the rise. Explore this fragile relationship through the eyes of Tashi, a local goat herder, and learn how his village has partnered with the Snow Leopard Trust to find ways to both live with and save one of the rarest cats on Earth.